by Manso, J. A., Pérez-Prior, M. T., Gómez-Bombarelli, R., González-Pérez, M., Céspedes, I. F., García-Santos, M. P., Calle, E., Casado, J.
Published in Journal of physical organic chemistry (01.05.2009)

by Irish, E K, Gómez-Bombarelli, R, Lovett, B W
Published in arXiv.org (16.10.2013)